Our Solar System is home to many unique planetary bodies, including protoplanets and dwarf planets. Here are the unique traits that differentiate the two.

It's Albert's birthday the day after tomorrow, and Darian doesn't know what to get him as a gift. He wants to make sure it's ...

What is the difference between a moon and a planet? Trick question! According to scientific definitions, there often isn’t much of a difference at all. That might seem counterintuitive, but it’s true.

Just 4.3 light years from Earth lies a star called Alpha Centauri A, which is famous for being the nearest star that resembles our own Sun. In the popular Avatar movies, this star's system is home to ...